Administration: Fix visual regression in media search input.

Follow up to [r56023]. Improve handling of breakpoint between 782 and 1000px for media grid view & repair styles for media modal search input.

Props kebbet, joedolson.
Fixes #57949.

git-svn-id: https://develop.svn.wordpress.org/trunk@56026 602fd350-edb4-49c9-b593-d223f7449a82

src/wp-includes/css/media-views.css

@@ -281,10 +281,6 @@
 	width: calc(48% - 12px);
 }
 
-.media-modal-content .attachments-browser .search {
-	width: 100%;
-}
-
 /* higher specificity */
 .wp-core-ui .media-modal-icon {
 	background-image: url(../images/uploader-icons.png);
@@ -924,6 +920,14 @@
 	max-width: 100%;
 }
 
+.media-modal .media-frame .media-search-input-label {
+	position: absolute;
+	left: 0;
+	top: 10px;
+	margin: 0;
+	line-height: 1;
+}
+
 /**
  * Attachments
  */